* {
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}
html {
  font: 14px 'Helvetica Neue', 'PingFang SC', STHeitiSC-Light, Helvetica;
  -webkit-text-size-adjust: 100%;
  color: #666;
  line-height: 1;
}
body,
html {
  max-width: 750px;
  margin: 0 auto;
  height: 100%;
}
li,
ul {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}
a:active,
a:hover {
  outline: 0;
}
button,
input,
select,
textarea {
  outline: 0;
  border: 1px solid #ddd;
  color: inherit;
  font-size: inherit;
  background: none;
  font-family: inherit;
}
button,
input[type=submit],
input[type=button],
input[type=checkbox] {
  -webkit-appearance: none;
}
#app {
  min-height: 100%;
  overflow: hidden;
}
.btn {
  width: 100%;
  line-height: 0.8rem;
  background: #7fcdef;
  color: #fff;
  font-size: 0.4rem;
  text-align: center;
  display: inline-block;
}
[flex] {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
}
[flex~="main:left"] {
  -webkit-box-pack: start;
  -webkit-justify-content: flex-start;
  -ms-flex-pack: start;
  justify-content: flex-start;
}
[flex~="main:justify"] {
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
}
[flex~="main:center"] {
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
}
[flex~="cross:top"] {
  -webkit-box-align: start;
  -webkit-align-items: flex-start;
  -ms-flex-align: start;
  -ms-grid-row-align: flex-start;
  align-items: flex-start;
}
[flex~="cross:bottom"] {
  -webkit-box-align: end;
  -webkit-align-items: flex-end;
  -ms-flex-align: end;
  -ms-grid-row-align: flex-end;
  align-items: flex-end;
}
[flex~="cross:center"] {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  -ms-grid-row-align: center;
  align-items: center;
}
[flex-box="0"],
[flex] img {
  -webkit-box-flex: 0;
  -webkit-flex-grow: 0;
  -ms-flex-positive: 0;
  flex-grow: 0;
  -webkit-flex-shrink: 0;
  -ms-flex-negative: 0;
  flex-shrink: 0;
}
[flex~="box:mean"] > *,
[flex-box="1"] {
  -webkit-box-flex: 1;
  -webkit-flex-grow: 1;
  -ms-flex-positive: 1;
  flex-grow: 1;
  -webkit-flex-shrink: 1;
  -ms-flex-negative: 1;
  flex-shrink: 1;
}
@keyframes up {
  0% {
    opacity: 0;
    transform: translateY(800px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes scale {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}
[anim] {
  animation-fill-mode: both;
  animation-duration: .2s;
}
[anim='up'] {
  animation-name: up;
}
[anim='scale'] {
  animation-name: scale;
}
.cen {
  text-align: center;
}
